lob_t link_handshake(link_t link)
{
if(!link) return NULL;
if(!link->x) return LOG_DEBUG("no exchange");
LOG_DEBUG("generating a new handshake in %lu out %lu",link->x->in,link->x->out);
lob_t handshake = lob_copy(link->mesh->handshake);
lob_t tmp = hashname_im(link->mesh->keys, link->csid);
lob_body(handshake, lob_raw(tmp), lob_len(tmp));
lob_free(tmp);
// encrypt it
tmp = handshake;
handshake = e3x_exchange_handshake(link->x, tmp);
lob_free(tmp);
return handshake;
}
lob_t link_handshakes(link_t link)
{
uint32_t i;
uint8_t csid;
char *key;
lob_t tmp, hs = NULL, handshakes = NULL;
if(!link) return NULL;
// no keys means we have to generate a handshake for each key
if(!link->x)
{
for(i=0;(key = lob_get_index(link->mesh->keys,i));i+=2)
{
util_unhex(key,2,&csid);
hs = lob_new();
tmp = hashname_im(link->mesh->keys, csid);
lob_body(hs, lob_raw(tmp), lob_len(tmp));
lob_free(tmp);
handshakes = lob_link(hs, handshakes);
}
}else{ // generate one just for this csid
handshakes = lob_new();
tmp = hashname_im(link->mesh->keys, link->csid);
lob_body(handshakes, lob_raw(tmp), lob_len(tmp));
lob_free(tmp);
}
// add any custom per-link
for(hs = link->handshakes; hs; hs = lob_linked(hs)) handshakes = lob_link(lob_copy(hs), handshakes);
// add any mesh-wide handshakes
for(hs = link->mesh->handshakes; hs; hs = lob_linked(hs)) handshakes = lob_link(lob_copy(hs), handshakes);
// encrypt them if we can
if(link->x)
{
tmp = handshakes;
handshakes = NULL;
for(hs = tmp; hs; hs = lob_linked(hs)) handshakes = lob_link(e3x_exchange_handshake(link->x, hs), handshakes);
lob_free(tmp);
}
return handshakes;
}
